Abstract
Protocatechuic acid (PCA) and its precursor protocatechuic aldehyde (PCAL) are widely distributed polyphenols found in edible plants, fruits, and vegetables. PCA is the major human metabolite of cyanidin-glucosides derived from anthocyanins (ACN). Evidence suggests, that both PCA and PCAL influence the profile of the gut microbiota which contributes to the improvement of health benefits for humans. As agents used by plants in the self-defense, they have antibacterial and antiviral activity. Consumption of these substances is associated with lowered risk of some chronic conditions such as cardiovascular diseases. In aging-related states such as neurodegeneration, a reduction in amyloid deposition associated with Alzheimer’s disease was observed. Both PCA and PCAL have been shown to have antioxidant activity in vitro and in vivo, and beneficial effects in chronic inflammation. Both have been shown to be effective in cancer chemoprevention. The preventive effect of PCA in experimental models of the metabolic syndrome is of great importance, thanks to the antidiabetic effect and reducing obesity. PCA and PCAL show antiatherogenic activity; moreover, PCA acts as an anti-aggregating agent, reducing the risk of thrombosis. In preclinical studies, a beneficial effect of PCA in inhibiting osteoporosis has been found. It should be taken into account, that phenolic acids as dietary components, inter alia, show anticancer activity by reversing epigenetics-related changes, that lead to the activation of oncogenes and inactivation of suppressive genes.
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Abbreviations
- 3-MT:
-
3-methoxy-4-hydroxyphenethylamine, 3-methoxytyramine
- ABCA1 :
-
ATP-binding cassette transporter A1
- ABCG1:
-
ATP-binding cassette transporter G1
- ACN:
-
Anthocyanins
- AGE:
-
Advanced glycation end products
- Akt (PKB):
-
Protein kinase B
- AMPK:
-
Adenosine 5′-monophosphate-activated protein kinase
- ANF:
-
Atrial natriuretic factor
- ApoE:
-
Apolipoprotein E
- ARE:
-
Antioxidant response element
- ATF:
-
Activating transcription factor
- Bak 1:
-
Bcl-2 homologous antagonist/killer
- Bax:
-
Apoptosis regulator BAX/bcl-2-like protein 4
- Bcl-2:
-
B-cell lymphoma 2
- Bcl-xL:
-
B-cell lymphoma-extra large
- BdNF :
-
Brain-derived neurotrophic factor
- C3G:
-
Cyanidin-3-O-β-glucoside
- Casp:
-
Caspase; cysteine-aspartic acid protease
- CAT:
-
Catalase
- CDK:
-
Cyclin-dependent kinase
- c-Fos:
-
Proto-oncogene c-Fos
- Cmax :
-
Maximum plasma concentration
- COMT:
-
Catechol-O-methyl transferase
- CREB:
-
cAMP-response element binding protein
- c-Src:
-
Proto-oncogene tyrosine-protein kinase Src
- DNA:
-
Deoxyribonucleic acid
- DNMT:
-
DNA methyltransferase
- GPx:
-
Glutathione peroxidase
- GSK:
-
Glycogen synthase kinase
- HDAC:
-
Histone deacetylase
- HMBG 1:
-
High-mobility group box 1 protein
- ICAM-1:
-
Intercellular adhesion molecule 1
- IRE1α:
-
Inositol-requiring enzyme 1 α
- JAK:
-
Janus kinase
- JNK:
-
c-Jun N-terminal kinase
- LC-MS-MS:
-
Liquid chromatography electrospray ionization tandem mass spectrometry
- LDH:
-
Lactic dehydrogenase
- LDL:
-
Low-density lipoprotein
- MAPK:
-
Mitogen-activated protein kinase
- MHCβ:
-
Major histocompatibility complex with β chain
- miRNA:
-
MicroRNA
- MPTP:
-
1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine
- mTOR:
-
Mechanistic target of rapamycin
- NFATc1:
-
Nuclear factor of activated T cells 1
- NFκB:
-
Nuclear factor kappa B
- NO:
-
Nitric oxide
- Nrf2:
-
Nuclear factor erythroid 2-related factor 2
- p27KIP1:
-
Cyclin-dependent kinase inhibitor
- p38:
-
MAPKp38 mitogen-activated protein kinase
- p65:
-
Transcription factor p65
- PARP:
-
Poly (ADP-ribose) polymerase
- PCA:
-
Protocatechuic acid
- PCAL:
-
Protocatechuic aldehyde
- PDGF:
-
Platelet-derived growth factor
- PERK:
-
Protein kinase R-like endoplasmic reticulum kinase
- PI3K:
-
Phosphatidylinositol 3-kinase
- PKC:
-
Protein kinase CRAGE
- PPAR-ϒ:
-
Peroxisome proliferator-activated receptor gamma
- PTX3:
-
Pentraxin-3
- RAGE:
-
Receptor for advanced glycation end products
- RANK:
-
Receptor activator of nuclear factor-κb
- RANKL:
-
Receptor activator of nuclear factor-κb ligand
- RCT:
-
Reverse cholesterol transport
- ROS:
-
Reactive oxygen species
- Sir 2:
-
Silent information regulator 2
- SIRT1:
-
NAD-dependent deacetylase sirtuin-1
- SLC7A5:
-
Large neutral amino acids transporter small subunit 1
- SOD:
-
Superoxide dismutase
- STAT:
-
Signal transducer and activator of transcription
- TNF-α:
-
Tumor necrosis factor alpha
- TRAF6:
-
Tumor necrosis factor receptor-associated factor 6
- TROLOX:
-
Equivalent antioxidant capacity
- α-SMA:
-
α-smooth muscle actin
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Widy-Tyszkiewicz, E. (2022). Current Evidence for Disease Prevention and Treatment by Protocatechuic Acid (PCA) and Its Precursor Protocatechuic Aldehyde (PCAL) in Animals and Humans. In: Ekiert, H.M., Ramawat, K.G., Arora, J. (eds) Plant Antioxidants and Health. Reference Series in Phytochemistry. Springer, Cham. https://doi.org/10.1007/978-3-030-78160-6_36
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